Cultivator



143W .EN

CULT l VATOR.

FILED Nov. 28. 192! F. WHITCOMB ET AL.

Feb., 6, 1923.l

Hgh H923. 'i' 411,292

' F.. WHITCGMB ET AL.

CULTIVATOR MED Nm, ze, |921..l

4 sHEETs-sHsET 4 I ii Patented Feb. 6, 1923. l

FRANK WHITCOMB, WILLIAM LAVENDER, AND RAYMOND .ARTHUR CALVERT, 'OF

SMITHS FALLS, ONTARIO, CANADA, ASSIGNORS TO THE FROST do Ui/"GOD COM- PANY, LIMITED, OF SMITHS FALLS,,Olif'lARICL CANADA, A COEFURATTLQN.

CULTIVATGR.

Application led November 2`8, 1921. Serial No. S18/$18.

, To aZZ'z/Jhomz'tmag/ concem: Figure 9 is a sectional elevation of an Be it known that we, FRANK WHrrooMB, alternative form of the invention. lVniLrAM Lavnrrnnn, and RAYMOND ARTHUR In the drawings, like characters of refer- 55 CALVERT, all o1Ll the town of Smiths Falls, in yence indicate corresponding parts in all the 5 the Province of Ontario and Dominion of figures.

Canada, have invented certain new and u se- Referring to the drawings t'ul lmprovenlents in Cultivators, of which A indicates a truck having side wheels 10 the following is a specification. and 11 and tore wheels 12 and 13 and a suit S0 This invention relates to improvements in able bitching device 14. The truck carries c-ultivators, particularly to ythose of the type/a frame 15 from which the cultivator teeth employing a plurality of mounted teetl1 /carI 16 and 17 are supported by pivoted frames riedon frames'by which the teeth arefraised 13, the p-ivoted frames being raised and lowor lowered from or to operative position, and ered by suitable means to bringthe teeth to 65 the objects of' the invention are to provide and from operative' position, The well 15 simple and effective means operable, during lknown means for this purpose which we have the movement kot' the machine by which the illust-rated includes an operating shaft 18 depth ot' cut or extent of lowering of the' mounted in suitable bearings 19 on the 'frame teeth of the cultivator may be regulated to 15 having a crank 20 at one end connected by 70 correspond with the variations in the chara connecting rod 21 with a lever 22 connectacter ot' the ground on which the cult-ivatol' ed to a] cross rod 23 supported by brackets isI being use 24 on the frame 15. The rod 23 is formed Further objects ot the invention are to square between the brackets 2l and has rigprovide a device ot' this character which may idly mounted thereon arms Qwhich are slid` 75 be readily applied to existing types of culably engaged by rods 26 extending to the tivators without reorganization of the matrames B and heilig surrounded by springs chine. 2T which extend from the arms 2G tothe Further objects still arey to generally imframes B, the said frames B being pivotally prove and simplify the construction of the supported at their forward end on a cross 80 device to better adapt the various parts to rod 28. lVe have shown only two ot these 30 perform the functions required ot' it. v frames in full lines in Figure 2, but it will I It consists essentially ot the improved kbe understood that in the completed maconstruction hereinafter describedin detail chine a number of these frames would be in the accompanying specification and drawusually provided side by side. 85 ings. The shai" 18 is designed to be operated ln the drawings: from the wneel 11 by means of a sprocket 29 Figure 1 is a side elevation of an cmbodicarried by the wheel connected by a chain ment ot' the invention. 30 with a sprocket 31 connected to a clutch Figure 2 is a plan view-ot the same, only member (see Figures 6 8). The clutch 90 one set of teeth shown in full lines for the member 32 is loosely niountedcn the shaft 40 sake of clarity in illustration. -18 and is provided with internal teeth 33 de- Figure 3 'is al detail in elevation of the signed ro be engaged by a roller 311 carried operable parts of the adjusting mechanism. on ay lever 35 centrally fulcrumed within a Figure 4 vis a crossvsectional detail on the recess 36 on a fixed clutch member 37. The 95 s line .frx, Figure opposite end of the lever 35 to that carrying' Figure 5 is a sectional elevation ot no of the vroller 34 is connected by a link 33 with the supporting brackets. a corresponding lever 39 also mounted with- Y Figure 6' is a detail in plan of the clutch in the recess 36. vThe `opposite end of the for the power lift. lever 39 to that connected to the link 38 is 3.00

Figure 7 is a detail inv elevation of the inu secured to a spring 40 which extends between terior parts oft-he clutch. the end of the lever 39 and the clutch mem- Figure 8 is a detail in elevation of one of `ber 38 and is designed to tend to hold the' the clutch members. ,1'o1ler31- inengaged position.

rlihe roller is designed to he moved to in operative position by disengaging dogs 4l and 42 `connected'to the levers 35 and 39 projetting through slots 43 and 44 in the member 37 and designed to be engaged and op erated by a roller 45 carried on a frame 46 on a control red 47 and is journalled in brackets 48 and provided with an operating vlever 49 from which an operating rod 5() eX nds, being slidably supported at its lforward end in a bracket. 5l. The clutch inember 37 is formed with diametrically opposite semieircular recesses 52 designed to receive the roller 45. l

n operation, when the roller 45 is in the recess 52, the dog 4l. or 42 is heldin such position that the roller 34 is disengaged. When the roller 45 is by operation of the crank 46-re1noved from the slot 52, theroller 34 under action of the spring 40 engages the teeth 33 causing the clutch mcin- -ber 37 to turn with the'sprocket 31. rihis turns the shaft 18 to which the clutch inember 37 is secured. When a half turn is reached, however, the 'roller 45 will be en` gagged by the opposite dog 41 or 42 to that with which it was previously engaged and wiil operate the dog itself to engage the roller 34, the roller 45 at this point sliding into one of. the recesses 52. The half turn of the shaft 18 is effected through the mech anisin previously described and through raising or loweringthe frames il carrying the cultivator teeth.4

llt may be stated :that the frames B are` assisted in their return to normal position by means of a spring 72 extending from a lever 73 on the rod 23 to a suitable point on the frame l5. The shaft 47 is also ineintained in normal position by means of a spring 74 which extends from a link 75 connected to the lever 49 to a suitable point .on the frame 15.

It may be stated that the mechanism so far described is well known in the art and is, for instance similar .to that shown on epage 25 of the catalogue of the Frost & l/Voods Company, -Limited, Smiths Falls, Ontario, 1920 edition. t- Will be seen in the mechanism already described, no means are provided for adjusting ther depth to which the cultivator teeth are lowered during' movement of the machine. A certain amount of adjustment can be made by ad justing thev tension of the spring '27 or the angular position of the brackets 25, but these adjustments can not be made during operation of the machine. lin order te provide for these. adjustments, the connecting rod 2l in place of being directly connected. to the lever 22 is 'pivotally conneotedoto a sliding cross head or connecting-member 53 mounted on the lever 22 and connected to the rod 21 by 1f rieanjs oa strap or casting 54 which is pivoted'to the cross head ov a pivot pin 55 which also extends tnrough a longitudinally extending slot 56 in the lever 22, the vouter end of the strap or casting hai,v` ing screw threaded engagement with the rod 21.

The position of' the' cross rod 53 with respect to the lever 22 is designed to be adjustedby means of a screw 56 which extends through the cross head and is journalledat its upper end in, a bearing 57 connected to the lever 22. The upper end ot the screw or spindle 56' carries a bevel gear 58 which meshes with a corresponding bevel gearl 59 on a stubshait 60 which is journalled in a bracket 61 connected to the bear- 'ing 57. The stub shaft 60 is connected by a universal joint 62 with an operating rod .or spindle G3, the forward end of which is squared'and engaged with a sleeve 64 which has a correspondingly squared central perforation 65. rlhe sleeve 64 is rotatably mounted in abearing 'on thebrachet 5l and is provided at its forward end with a hand wheel 67 havinr a. crank 68 thereon. t will be seen by these means rotary motion may be given to the rod 63 at the same time longitudinal sliding movement of the same is provided for during raising andlowering o' the cult-ivator teeth. It will further be seen that operation of the hand wheel 67 and conseqnen i ,turning or' the rod 63 will turn thevscrew 56- adjusting the position of the 'cross head 58 on the lever 22 and thus varying the throw of the lever unser action of the crank 20. This variation in throw of the .lever will produce a correspending variation in the depth to which the cuitivator teeth are lowered. -f

lin the alternative form oithe invention shown in Figure 9, the adjusting means are designed to be operated from a point adjacent te the drivers seat an "lF placed at the front end of the machine, as in the preced ing views. lt may be stated that in the case of a oultivator. which `is designed to be adjust the mechanism from the forward part thereof, which is adjacent to the seat of the tractor for horse drawn cultivators, it is more desirable that the adjustment should take place from the drivers seat on `the cultivator. ln Figure 9, (l indicates the drivers seat, but in this instance the screw 53a is turned by means of a crank 70 connected to the top thereof, the normal position of which is adjacent to the drivers seat. The remaining part of the mechanism is the saine as that previouslydescribed.

It will be seen that the foregoing; mechanism `provides a simple and efective de by which the amount el raisingl er iorre of the cultivator teeth may be adjusted nu ing operation ot' the machine te' eerrespont'i '110 drawn by tractors, it is more convenient te i with variations in the soil in different parts of a field in which 'the cultivator is being used.

As many changes could be made'l in the above construction and many Widely diiierent embodiments of our invention within the'scope of the claims, constructed without departing from the spirit orscope thereof, it is intended that all matter contained in the accompanying specication and drawi ings shall be interpreted as illustrative and not in a limiting sense.

Vhat we claim as our invention is 1. In a machine of the character described and 1n combination a pivoted trame, cultivating means carried thereby, a lever operai cultivating means carried by the frame, a

pivoted lever operably connected with tlie frame designed to raise and lower the same,A

an operating shaft, a crank lon the operating shaft, a connecting rod connected to the crank and to the lever, means for adjusting the point of connection between the connecting rod and the lever, said means comprising a cross head slidably mounted on the lever, a bearing on the lever, a screw mounted in the bearing on the lever and operatively engaging the cross head.

3. In a cultivator ot the character described and in combination a pivoted frame, cultivating means carried by the frame, a pivoted lever operatively connected to the traine designed to raise and lower the same, means for reciprocating the lever, screw means associated with thepmeans for reciprocating the lever adapted to'vary the throw thereof, and means operable from the orward part of the machine for turning the 4. ln a cultivator of the character described and in combination a pivoted frame,

eli

pivoted lever operatively connected to the 'frame designed to raise and lower the same, means for reciprocating the lever, screw means associated with the means for reciprocating the lever adapted to vary the throw thereof, and means operable from the forward part or' the machine for turning the screw, the said last mentioned means in -v cluding a telescoping operating member designed to permit movement of the lever during raising and lowering of the frame.

5. ln a cultivatoi' of the character described and in combination a pivoted trame, cultivating means carried by the frame, a pivoted lever operatively connected to the,

frame designed to raise and lower the same, means for reciprocating the lever, screw means associa-ted with the means for reciprocating the lever adapted to vary the throw thereof, and means operabie from the forward part of the machine for turning-the screw, said means including a gear connected to the screw, a rod operatively connected to the gear, a sleeveslidably engaging the rod designed to turn the same, and means for turning the sleeve.

G. ln a. cultivator of the character del scribed and in combination a pivoted frame,

cultivating means carried by the frame, a lever operatively connected to the lframe and designed to effect raising and lowering the same, a cross head slidably mounted on the lever, a connecting rod pivotally connected to the cross head, means Jfor reciprocating the end of the connecting rod, a bearing on the lever, a screw threaded therein and operatively connected to the cross head, a gear on the screw, a second gear meshed with the vfirst mentioned gear, a stub shaft connected to the second gear, a bearing for the saidv stub shattcarried by the lever, an operating rod, auniversal joint between the operating rod and the stub shaft, afsleeve slidably engaging the rod and.designed to turn the rame, and means for turning the sleeve.

In witness whereof we have hereunto set our hands intliepresence of two witnesses.

RAYMGND ARTHUR CALVEBIJF.` VWM. LAVENDER. FRANK VHXTCOMB. 1

TWitnesses C, H. MCKIMM, MARY Z. MCKAY.

lili) 

